This was only the second targeting maneuver of New Horizons’ approach to Pluto; Sunday’s burst adjusted the spacecraft’s velocity by just 52 centimeters per second, aiming it toward the desired close-approach target point approximately 7,750 miles above Pluto’s surface.
This was only the second targeting maneuver of New Horizons’ approach to Pluto; Sunday’s burst adjusted the spacecraft’s velocity by just 52 centimeters per second, aiming it toward the desired close-approach target point approximately 7,750 miles above Pluto’s surface.
The maneuver was based on the latest radio tracking data on the spacecraft and range-to-Pluto measurements made by optical-navigation imaging of the Pluto system taken by New Horizons in recent weeks.
Using commands transmitted to the spacecraft on June 12-13, the thrusters began firing at 12:05 a.m. EDT and stopped 45 seconds later. Telemetry indicating the spacecraft was healthy and that the maneuver performed accurately reached the New Horizons Mission Operations Center at the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, through NASA’s Deep Space Network at 6:23 a.m. EDT. With the spacecraft nearly 2.95 billion miles from home, the radio transmissions from its communications system need nearly 4.5 hours to reach Earth.
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